45% (1978)

59% (1981)

23% (1981)

50% (1969)

70% (1962)

35% (1957)

0% (1952)

64% (1978)

58% (1970)

0% (1973)

60% (1970)

58% (1977)

35% (1977)

0% (1970)

60% (1973)

23% (1974)

48% (1982)

0% (1972)

45% (1977)

70% (1970)